Stefanie Semper
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View article: Response of the Nordic Seas to the 2–6 February 2020 Marine Cold Air Outbreak in the GLORYS12 Ocean Reanalysis
Response of the Nordic Seas to the 2–6 February 2020 Marine Cold Air Outbreak in the GLORYS12 Ocean Reanalysis Open
Marine Cold Air Outbreaks (MCAOs) play a crucial role in wintertime water mass transformation in the Nordic Seas. However, due to the spatio-temporal variability of atmospheric forcing and lateral ocean transport, the processes by which MC…
View article: Atlantification drives recent strengthening of the Arctic overturning circulation
Atlantification drives recent strengthening of the Arctic overturning circulation Open
The Arctic Ocean is the northern terminus of the Atlantic Meridional Overturning Circulation (AMOC), whose dense water masses are key to the global ocean circulation. The Arctic climate is rapidly changing, and it is not known how the Arct…
View article: Poleward shift of AMOC source regions maintains stable supply of dense overflow waters to the North Atlantic Ocean
Poleward shift of AMOC source regions maintains stable supply of dense overflow waters to the North Atlantic Ocean Open
The Atlantic Meridional Overturning Circulation (AMOC), carrying warm, salty water to high latitudes, is a key component of the global ocean circulation with profound impacts on climate. To sustain the AMOC, dense-water formation at high n…
View article: The Cumulative Effect of Wintertime Weather Systems on the Ocean Mixed‐Layer Stable Isotope Composition in the Iceland and Greenland Seas
The Cumulative Effect of Wintertime Weather Systems on the Ocean Mixed‐Layer Stable Isotope Composition in the Iceland and Greenland Seas Open
The Iceland and Greenland Seas are characterized by strong heat fluxes from the ocean to the atmosphere during wintertime. Here we characterize the atmospheric signal of this strong evaporation in terms of water vapor isotopes and investig…
View article: Supporting Sensemaking by Introducing a Connecting Thread Throughout
Supporting Sensemaking by Introducing a Connecting Thread Throughout Open
Introductory courses typically provide an overview of the study program's relevant topics, concepts, theories, and terminology. They could also help socialize students into their roles as students of and future experts in the field of stud…
View article: Coupled atmosphere–ocean observations of a cold‐air outbreak and its impact on the Iceland Sea
Coupled atmosphere–ocean observations of a cold‐air outbreak and its impact on the Iceland Sea Open
Marine cold‐air outbreaks (CAOs) are vigorous equatorward excursions of cold air over the ocean, responsible for the majority of wintertime oceanic heat loss from the subpolar seas of the North Atlantic. However, the impact of individual C…
View article: How Warm Gulf Stream Water Sustains a Cold Underwater Waterfall
How Warm Gulf Stream Water Sustains a Cold Underwater Waterfall Open
The most famous ocean current, the Gulf Stream, is part of a large system of currents that brings warm water from Florida to Europe. It is a main reason for northwestern Europe’s mild climate. What happens to the warm water that flows nort…
View article: Water mass transformation in the Iceland Sea: Contrasting two winters separated by four decades
Water mass transformation in the Iceland Sea: Contrasting two winters separated by four decades Open
© The Author(s), 2022. This article is distributed under the terms of the Creative Commons Attribution License. The definitive version was published in Våge, K., Semper, S., Valdimarsson, H., Jónsson, S., Pickart, R., & Moore, G. Water mas…
View article: Evolution and Transformation of the North Icelandic Irminger Current Along the North Iceland Shelf
Evolution and Transformation of the North Icelandic Irminger Current Along the North Iceland Shelf Open
The North Icelandic Irminger Current (NIIC) flowing northward through Denmark Strait is the main source of salt and heat to the north Iceland shelf. We quantify its along‐stream evolution using the first high‐resolution hydrographic/veloci…
View article: Circulation along the northern slope of the Greenland-Scotland Ridge
Circulation along the northern slope of the Greenland-Scotland Ridge Open
The Greenland-Scotland Ridge separates the subpolar North Atlantic from the Nordic Seas and constrains the flow of the upper and lower branches of the northern extremity of the Atlantic Meridional Overturning Circulation (AMOC). Warm, sali…
View article: CTD temperature and salinity profiles along five transects in NE Iceland / Iceland-Faroe ridge
CTD temperature and salinity profiles along five transects in NE Iceland / Iceland-Faroe ridge Open
This data set contains hydrographic measurements of high spatial resolution which were collected during a shipboard survey onboard RV Knorr in September 2011. The survey included transects across the northern slope of Iceland and the Icela…
View article: Water velocity profiles from LADCP casts along five transects in NE Iceland / Iceland-Faroe ridge
Water velocity profiles from LADCP casts along five transects in NE Iceland / Iceland-Faroe ridge Open
This data set contains velocity measurements of high spatial resolution which were collected during a shipboard survey onboard RV Knorr in September 2011. The survey included transects across the northern slope of Iceland and the Iceland-F…
View article: The Emergence of the North Icelandic Jet and Its Evolution from Northeast Iceland to Denmark Strait
The Emergence of the North Icelandic Jet and Its Evolution from Northeast Iceland to Denmark Strait Open
The North Icelandic Jet (NIJ) is an important source of dense water to the overflow plume passing through Denmark Strait. The properties, structure, and transport of the NIJ are investigated for the first time along its entire pathway foll…
View article: The Iceland Greenland Seas Project
The Iceland Greenland Seas Project Open
The Iceland Greenland Seas Project (IGP) is a coordinated atmosphere–ocean research program investigating climate processes in the source region of the densest waters of the Atlantic meridional overturning circulation. During February and …
View article: Temperature, salinity and velocities on seven transects along the continental slope north of Iceland
Temperature, salinity and velocities on seven transects along the continental slope north of Iceland Open
This data set contains hydrographic and velocity measurements of high spatial resolution which were collected during 13 shipboard surveys between 2004 and 2018. The surveys included seven transects across the northern slope of Iceland. The…
View article: A Numerical Study of Interannual Variability in the North Icelandic Irminger Current
A Numerical Study of Interannual Variability in the North Icelandic Irminger Current Open
The North Icelandic Irminger Current (NIIC) is an important component of the Atlantic Water (AW) inflow to the Nordic Seas. In this study, both observations and a high‐resolution (1/12 ° ) numerical model are used to investigate the season…
View article: A novel approach to process brittle ice for continuous flow analysis of stable water isotopes
A novel approach to process brittle ice for continuous flow analysis of stable water isotopes Open
Brittle ice, which occurs in all intermediate-depth and deep ice cores retrieved from high-latitude regions, presents a challenge for high-resolution measurements of water isotopes, gases, ions and other quantities conducted with continuou…